January 24, 2018 16:47 Updated Follow To contact INDOT Central Office Customer Service, call 1-866-849-1368 or email email@example.com. Contact information and other frequently used phone numbers for INDOT districts can be found at Frequently Used Phone Numbers Related articles What is being done to inform property owners about the Illiana project and their legal rights? Why is the Illiana needed? How do I report a concern? How do I find a participating lender? How do I file a claim for property damage and/or personal injury?